Abstract
In this paper we addressed one aspect of team cognition, namely shared knowledge, and investigated the relationship between shared knowledge and collective efficacy. The task was doubles tennis; participants were 160 adults, for a total of 80 teams. Data was collected via self-report questionnaires. As we had suspected, there was a strong, positive relationship between collective efficacy and shared knowledge (r = .5, p < .05). Using hierarchical regression, we also found that team familiarity was positively related to shared knowledge, while both task skill and team familiarity were positively related to collective efficacy
